JetBlue is having a two day sale with fares starting at $59 each way. Reservations must be booked by Wednesday April 23, 2014 at 11:59pm EST for travel May 6 through June 25 (blackout dates: May 22-27).
I looked at a few random routes and fares seemed to be pretty decent, so if you have any upcoming travel you are looking to book it is worth taking a look.
Also, if you already have a JetBlue reservation booked during this time, check to see if the fare went down. If it did, you can call JetBlue and they will give you a credit for the fare difference to be used for a future date.